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<h1><a name="SECTION0025400000000000000000">
23.4 <tt class="module">test</tt> --
         Regression tests package for Python</a>
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The <tt class="module">test</tt> package contains all regression tests for Python as
well as the modules <tt class="module">test.test_support</tt> and
<tt class="module">test.regrtest</tt>.  <tt class="module">test.test_support</tt> is used to enhance
your tests while <tt class="module">test.regrtest</tt> drives the testing suite.

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Each module in the <tt class="module">test</tt> package whose name starts with
"<tt class="samp">test_</tt>" is a testing suite for a specific module or feature.
All new tests should be written using the <tt class="module"><a href="module-unittest.html">unittest</a></tt> module;
using <tt class="module"><a href="module-unittest.html">unittest</a></tt> is not required but makes the tests more
flexible and maintenance of the tests easier.  Some older tests are
written to use <tt class="module"><a href="module-doctest.html">doctest</a></tt> and a ``traditional'' testing
style; these styles of tests will not be covered.

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    <dt>Module <b><tt class="module"><a href="module-unittest.html">unittest</a></tt>:</b>
    <dd>Writing PyUnit regression tests.
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    <dd>Tests embedded in documentation strings.
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<span class="release-info">Release 2.5.1, documentation updated on 18th April, 2007.</span>
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